Play yard

ABSTRACT

A play yard comprises two brackets, two rail members, two support frames, a central member, a plurality of connecting members and a latch mechanism. The rail members are pivotally connected to the brackets. Each of the support frames comprises two upper support members and a lower support member. The upper support members are pivotally connected to the brackets. The lower support member is pivotally connected to the upper support members. The connecting members are pivotally connected to the central member and the lower support member. The latch mechanism is configured to lock or unlock the connecting members. When the latch mechanism locks the connecting members, the rail members, the upper support members, the lower support member and the connecting members are unfolded. When the latch mechanism unlocks the connecting members, the rail members, the upper support members, the lower support member and the connecting members are able to be folded.

CROSS REFERENCE TO RELATED APPLICATIONS

This is a division application of Ser. No. 15/961,899, now pending,filed on Apr. 25, 2018. This application further claims the benefit ofU.S. Provisional Application No. 62/489,830, which was filed on Apr. 25,2017, and is incorporated herein by reference and U.S. ProvisionalApplication No. 62/635,181, which was filed on Feb. 26, 2018, and isincorporated herein by reference.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The invention relates to a play yard and, more particularly, to a playyard capable of being folded or unfolded easily and rapidly.

2. Description of the Prior Art

For a parent or care giver, a play yard is a practical tool to take careinfants or children. In general, the play yard provides rest orentertainment space for infants or children. To reduce space occupied bythe play yard for shipment or storage, most of the play yards arefoldable so far and the size of the play yard can be reduced after beingfolded. However, the folding and unfolding process of the conventionalplay yard requires multiple steps, such that the operation isinconvenient for the parent or care giver.

SUMMARY OF THE INVENTION

An objective of the invention is to provide a play yard capable of beingfolded or unfolded easily and rapidly.

According to an embodiment of the invention, a play yard comprises twobrackets, two rail members, two support frames, a central member, aplurality of connecting members and a latch mechanism. The rail membersare pivotally connected to the brackets. Each of the support framescomprises two upper support members and a lower support member. Theupper support members are pivotally connected to the brackets. The lowersupport member is pivotally connected to the upper support members. Theconnecting members are pivotally connected to the central member and thelower support member. The latch mechanism is configured to lock orunlock the connecting members. When the latch mechanism locks theconnecting members, the rail members, the upper support members, thelower support member and the connecting members are unfolded withrespect to each other. When the latch mechanism unlocks the connectingmembers, the rail members, the upper support members, the lower supportmember and the connecting members are able to be folded with respect toeach other.

As mentioned in the above, the invention utilizes the latch mechanism tolock or unlock the connecting members, so as to unfold or fold the playyard. When the rail members, the upper support members, the lowersupport member and the connecting members are unfolded with respect toeach other, the latch mechanism locks the connecting members, such thatthe play yard can be situated in the unfolded state stably. If a userwants to fold the play yard for shipment or storage, the user canoperate the latch mechanism to unlock the connecting members and thenlift the central member, such that the rail members, the upper supportmembers, the lower support member and the connecting members rotatetoward the center of the play yard. Consequently, the rail members, theupper support members, the lower support member and the connectingmembers are folded with respect to each other. Accordingly, the foldingand unfolding process of the play yard of the invention can be performedwith minimal steps, such that the operation is very convenient for theuser.

These and other objectives of the present invention will no doubt becomeobvious to those of ordinary skill in the art after reading thefollowing detailed description of the preferred embodiment that isillustrated in the various figures and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view illustrating a play yard according to anembodiment of the invention.

FIG. 2 is a sectional view illustrating the latch mechanism shown inFIG. 1.

FIG. 3 is a sectional view illustrating the latch mechanism shown inFIG. 2 unlocking the connecting members.

FIG. 4 is a side view illustrating the play yard shown in FIG. 1.

FIG. 5 is a side view illustrating the central member shown in FIG. 4being lifted.

FIG. 6 is a side view illustrating the central member shown in FIG. 5being lifted continuously.

FIG. 7 is a side view illustrating the play yard shown in FIG. 6 beingfolded finally.

FIG. 8 is a perspective view illustrating the bottom of the centralmember shown in FIG. 1.

FIG. 9 is a perspective view illustrating the rail member and the uppersupport member shown in FIG. 1.

FIG. 10 is a perspective illustrating the upper support member shown inFIG. 9 rotating toward the center of the play yard.

FIG. 11 is a perspective illustrating the upper support member shown inFIG. 10 rotating toward the center of the play yard continuously.

FIG. 12 is a perspective view illustrating a mattress disposed in theplay yard.

FIG. 13 is a perspective illustrating the mattress shown in FIG. 12.

FIG. 14 is a perspective view illustrating a bassinet assembly accordingto an embodiment of the invention.

FIG. 15 is a side view illustrating a play yard according to anotherembodiment of the invention.

FIG. 16 is a side view illustrating the central member shown in FIG. 15being lifted.

FIG. 17 is a side view illustrating the bracket and the rail membershown in FIG. 15.

FIG. 18 is a perspective view illustrating the play yard shown in FIG.15.

FIG. 19 is a perspective view illustrating the central member shown inFIG. 18 being lifted.

DETAILED DESCRIPTION

Referring to FIGS. 1 to 7, FIG. 1 is a perspective view illustrating aplay yard 1 according to an embodiment of the invention, FIG. 2 is asectional view illustrating the latch mechanism 20 shown in FIG. 1, FIG.3 is a sectional view illustrating the latch mechanism 20 shown in FIG.2 unlocking the connecting members 18, FIG. 4 is a side viewillustrating the play yard 1 shown in FIG. 1, FIG. 5 is a side viewillustrating the central member 16 shown in FIG. 4 being lifted, FIG. 6is a side view illustrating the central member 16 shown in FIG. 5 beinglifted continuously, and FIG. 7 is a side view illustrating the playyard 1 shown in FIG. 6 being folded finally.

As shown in FIG. 1, the play yard 1 comprises two brackets 10, two railmembers 12, two support frames 14, a central member 16, a plurality ofconnecting members 18 and a latch mechanism 20. The rail members 12 arepivotally connected to the brackets 10. Each of the support frames 14comprises two upper support members 140 and a lower support member 142,wherein the upper support members 140 are pivotally connected to thebrackets 10 and the lower support member 142 is pivotally connected tothe upper support members 140.

In this embodiment, the bracket 10 is U-shaped and has a central pivotaxis 100 and two rail pivot axes 102. The rail members 12 are pivotallyconnected to the brackets 10 by the rail pivot axes 102. The uppersupport members 140 are pivotally connected to the brackets 10 by thecentral pivot axis 100. Furthermore, each of the support frames 14comprises two first hinges 144 and the lower support member 142 ispivotally connected to the upper support members 140 by the first hinges144.

The connecting members 18 are pivotally connected to the central member16 and the lower support member 142. In this embodiment, the play yard 1may further comprise a plurality of second hinges 22 disposed on thelower support member 142 and the central member 16. The connectingmembers 18 are pivotally connected to the central member 16 and thelower support member 142 by the second hinges 22. In this embodiment,the play yard 1 may further comprise two foot members 24 and twofloating members 26. The central member 16 is connected to the footmembers 24. The floating members 26 are pivotally connected to the footmembers 24 by the floor pivot axes 240. The play yard 1 can be placed ona plane by the foot members 24 and the lower support members 142.

The latch mechanism 20 is configured to lock or unlock the connectingmembers 18, so as to unfold or fold the play yard 1. In this embodiment,the latch mechanism 20 is disposed on the central member 16, but is notso limited. In another embodiment, the latch mechanism 20 may bedisposed at an appropriate position near the central member 16.

As shown in FIGS. 2 and 3, the central member 16 has a first slot 160and the second hinge 22 disposed on the central member 16 has a secondslot 220, wherein the second slot 220 is aligned with the first slot160. The latch mechanism 20 comprises a casing 200, an actuating member202, a resilient member 204 and a latch member 206. The casing 200 isdisposed on the central member 16. The actuating member 202 is movablyconnected to the casing 200, such that the actuating member 202 can bedepressed to a position shown in FIG. 3. The latch member 206 ispivotally connected to the actuating member 202 and the central member16 by pivot axes 208, 210. The resilient member 204 is disposed betweenthe actuating member 202 and the central member 16. In this embodiment,two resilient members 204 are disposed between the actuating member 202and the central member 16, but are not so limited.

As shown in FIGS. 1 and 2, when the connecting member 18 is unfolded, alatch portion 2060 of the latch member 206 protrudes out of the firstslot 160 of the central member 16 and engages with the second slot 220of the second hinge 22, such that the latch member 206 locks theconnecting member 18. When the latch member 206 of the latch mechanism20 locks the connecting members 18, the rail members 12, the uppersupport members 140, the lower support members 142 and the connectingmembers 18 are unfolded with respect to each other, such that the playyard 1 is situated in the unfolded state shown in FIG. 1 stably.Accordingly, the latch mechanism 20 can prevent the play yard 1 frominadvertently folding by locking the second hinges 22 to the centralmember 16. Furthermore, when the latch mechanism 20 locks the connectingmembers 18, the floating members 26 are unfolded and rest on the lowersupport members 142, such that a mattress can be disposed on thefloating members 26 and the connecting members 18.

If a user wants to fold the play yard 1 for shipment or storage, theuser has to depress the actuating member 202 first. As shown in FIG. 3,when the actuating member 202 is depressed, the latch portion 2060 ofthe latch member 206 retracts from the first slot 160 of the centralmember 16 and disengages from the second slot 220 of the second hinge22, such that the latch member 206 unlocks the connecting member 18.When the latch member 206 of the latch mechanism 20 unlocks theconnecting members 18, the rail members 12, the upper support members140, the lower support members 142, the connecting members 18 and thefloating members 24 are able to be folded with respect to each other.

As shown in FIGS. 4 to 7, when the latch mechanism 20 unlocks theconnecting members 18, the central member 16 is able to be lifted. Whenthe central member 16 is lifted, the rail members 12, the upper supportmembers 140, the lower support members 142, the connecting members 18and the floating members 24 rotate toward a center C of the play yard 1,such that the rail members 12, the upper support members 140, the lowersupport members 142, the connecting members 18 and the floating members24 are folded.

As shown in FIG. 5, when the central member 16 is lifted near the centerC in a direction D1, the lower support members 142 are pulled toward thecenter C of the play yard 1 and rotate about the first hinges 144 in adirection D2. Furthermore, the connecting members 18 and the floatingmembers 24 also rotate toward the center C of the play yard 1 in thedirection D2. As shown in FIG. 6, as the central member 16 continues tolift in the direction D1, the lower support members 142, the connectingmembers 18 and the floating members 24 continues to rotate toward thecenter C of the play yard 1 in the direction D2. As shown in FIG. 7, asthe central member 16 continues to lift in the direction D1, the lowersupport members 142 complete a full 180 degrees rotation in thedirection D2 and rest against the inner side of the upper supportmembers 140. Furthermore, the rail members 12 and the upper supportmembers 140 also rotate toward the center C of the play yard 1 in thedirection D2. Consequently, the play yard 1 is folded.

Referring to FIG. 8, FIG. 8 is a perspective view illustrating thebottom of the central member 16 shown in FIG. 1. As shown in FIG. 8, atleast one of the second hinges 22 has a restraining groove 222 and thecentral member 16 has at least one restraining portion 162 located inthe restraining groove 222. Accordingly, a rotation angle of theconnecting member 18 is limited by the restraining portion 162 and therestraining groove 222 during the folding and unfolding process.

Referring to FIGS. 9 to 11, FIG. 9 is a perspective view illustratingthe rail member 12 and the upper support member 140 shown in FIG. 1,FIG. 10 is a perspective illustrating the upper support member 140 shownin FIG. 9 rotating toward the center C of the play yard 1, and FIG. 11is a perspective illustrating the upper support member 140 shown in FIG.10 rotating toward the center C of the play yard 1 continuously.

As shown in FIG. 9, the rail member 12 has a first engaging portion 120and the upper support member 140 has a second engaging portion 1400.When the rail member 12 and the upper support member 140 are unfoldedwith respect to each other, the first engaging portion 120 engages withthe second engaging portion 1400, such that the rail member 12 is fixedin a horizontal position. Furthermore, the upper support member 140 hasa first stop portion 1402 and a second stop portion 1404. When the uppersupport members 140 are unfolded, the first stop portion 1402 of one ofthe upper support members 140 abuts against the second stop portion 1404of another one of the upper support members 140.

When the central member 16 is lifted (as mentioned in the above), theupper support member 140 rotates toward the center C of the play yard 1to disengage the second engaging portion 1400 from the first engagingportion 120 (as shown in FIG. 10), such that the rail member 12 is ableto rotate toward the center C of the play yard 1. As the central member16 continues to lift, the second engaging portion 1400 drops and nolonger engages with the first engaging portion 120, such that the railmember 12 can rotate freely toward the center C of the play yard 1.

In this embodiment, the bracket 10 may have a stop member 104. After theupper support member 140 rotates toward the center C of the play yard 1,the first stop portion 1402 abuts against the stop member 104, so as tohold the upper support member 140 in a perpendicular orientationrelative to the bracket 10.

Referring to FIGS. 12 and 13, FIG. 12 is a perspective view illustratinga mattress 28 disposed in the play yard 1 and FIG. 13 is a perspectiveillustrating the mattress 28 shown in FIG. 12. As shown in FIG. 12, theplay yard 1 may further comprise a mattress 28 disposed in the play yard1. As mentioned in the above, when the play yard 1 is unfolded, themattress 28 can be disposed on the floating members 26 and theconnecting members 18.

As shown in FIG. 13, the mattress 28 comprises two outer panels 280, afirst central panel 282 and a second central panel 284. The outer panels280 are pivotally connected to opposite sides of the first central panel282. An access hole 286 is formed on the first central panel 282. Thesecond central panel 284 is pivotally connected to one of the outerpanels 280 and covers the first central panel 282. When the secondcentral panel 284 is lifted, the access hole 286 is exposed, such thatthe latch mechanism 20 is able to be reached and operated to unlock theconnecting member 18 and then the central member 16 is able to be liftedthrough the access hole 286.

In other words, when the mattress 28 is disposed in the play yard 1, theuser can lift the second central panel 284, insert a hand into theaccess hole 286 to depress the actuating member 202 of the latchmechanism 20, and then lift the central member 16, so as to fold theplay yard 1 with the mattress 28. When the first central panel 282 islifted together with the central member 16, the outer panels 280 rotatetoward the center C of the play yard 1 together with the floatingmembers 26. Accordingly, the user need not remove the mattress 28 fromthe play yard 1 while folding the play yard 1.

Referring to FIG. 14, FIG. 14 is a perspective view illustrating abassinet assembly 30 according to an embodiment of the invention. Asshown in FIG. 14, the play yard 1 may further comprise a bassinetassembly 30. The bassinet assembly 30 may be placed within the play yard1, for example, by being connected with fabrics (not shown) of the railmembers 12, or by being hung on the rail members 12. The bassinetassembly 30 comprises a fabric structure 300 and two support structures302. The fabric structure 300 is connected with or hung on the railmembers 12. The support structures 302 are disposed in the fabricstructure 300 and configured to support the aforesaid mattress 28. Inthis embodiment, each of the support structures 302 comprises two rods3020 and a pivot member 3022, wherein the rods 3020 are pivotallyconnected to opposite ends of the pivot member 3022.

Furthermore, a through hole 304 is formed on a bottom of the fabricstructure 300, such that the latch mechanism 20 is able to be reachedand operated to unlock the connecting member 18 and then the centralmember 16 is able to be lifted through the through hole 304. In otherwords, when the bassinet assembly 30 is hung on the rail members 12 ofthe play yard 1, the user can insert a hand into the through hole 304 todepress the actuating member 202 of the latch mechanism 20 and then liftthe central member 16, so as to fold the play yard 1 with the bassinetassembly 30. When the central member 16 is lifted, the rods 3020 rotatetoward the center C of the play yard 1 with respect to the pivot member3022. Accordingly, the user need not remove the bassinet assembly 30from the play yard 1 while folding the play yard 1.

Referring to FIGS. 15 and 16, FIG. 15 is a side view illustrating a playyard 1′ according to another embodiment of the invention and FIG. 16 isa side view illustrating the central member 16 shown in FIG. 15 beinglifted. It should be noted that the same elements in FIGS. 15-16 andFIGS. 1-14 are represented by the same numerals, so the repeatedexplanation will not be depicted herein again.

As shown in FIGS. 15 and 16, the play yard 1′ further comprises asoftgoods clothing 32 covering the rail members 12, the support frames14, the central member 16 and the connecting members 18. In thisembodiment, the softgoods clothing 32 has a tunnel 320. The second hinge22 on the lower support member 142 is accommodated in the tunnel 320.The tunnel 320 allows the second hinge 22 to slide from one end toanother end as the central member 16 is lifted.

When the central member 16 is lifted in the direction D1, the connectingmembers 18 pull the lower support members 142 toward the center C of theplay yard 1′. While the lower support members 142 are pulled together,the tension on the side wall 322 of the softgoods clothing 32 pulls thetunnel 320 in a manner that causes the outer second hinge 22 to slidefrom one end of the tunnel 320 to another end. Then, the tunnel 320begins to pull up the outer wall of the play yard 1′, in line with theside wall 322 of the softgoods clothing 32, while the bottom portion 324of the softgoods clothing 32 drops away from the connecting members 18.Accordingly, the play yard 1′ will not fold if the outer second hinge 22is not allowed to slide inwardly along the aforementioned path of thetunnel 320.

Referring to FIG. 17, FIG. 17 is a side view illustrating the bracket 10and the rail member 12 shown in FIG. 15. As shown in FIG. 17, the playyard 1′ further comprises a first linkage member 34 and a second linkagemember 36. Furthermore, the bracket 10 has a sliding groove 106. Thefirst linkage member 34 is pivotally connected to the rail member 12 andthe second linkage member 36. The second linkage member 36 is pivotallyconnected to the sliding groove 106. Accordingly, the second linkagemember 36 can rotate and slide with respect to the sliding groove 106 asthe rail member 12 is being folded or unfolded. By means of the firstlinkage member 34, the second linkage member 36 and the sliding groove106, they can help the folding and unfolding process to operate in abalanced and consistent manner.

Referring to FIGS. 18 and 19, FIG. 18 is a perspective view illustratingthe play yard 1′ shown in FIG. 15 and FIG. 19 is a perspective viewillustrating the central member 16 shown in FIG. 18 being lifted. Asshown in FIGS. 18 and 19, the play yard 1′ further comprises at leastone webbing strap 38 and at least two pulleys 40. The pulleys 40 aredisposed on the lower support members 142 and the webbing strap 38 iswound around the pulleys 40. When the central member 16 is lifted, thepulleys 40 and the webbing strap 38 force the lower support members 142to rotate toward one another at a balanced angular motion to allow thelower support members 142 to pass one another cleanly withoutinterference. It should be noted that, the actuating member 202 of thelatch mechanism 20 is disposed on the top of the casing 200, so the usercan depress the actuating member 202 downwardly to unlock the connectingmember 18.

As mentioned in the above, the invention utilizes the latch mechanism tolock or unlock the connecting members, so as to unfold or fold the playyard. When the rail members, the upper support members, the lowersupport member and the connecting members are unfolded with respect toeach other, the latch mechanism locks the connecting members, such thatthe play yard can be situated in the unfolded state stably. If a userwants to fold the play yard for shipment or storage, the user canoperate the latch mechanism to unlock the connecting members and thenlift the central member, such that the rail members, the upper supportmembers, the lower support member and the connecting members rotatetoward the center of the play yard. Consequently, the rail members, theupper support members, the lower support member and the connectingmembers are folded with respect to each other. Accordingly, the foldingand unfolding process of the play yard of the invention can be performedwith minimal steps, such that the operation is very convenient for theuser.

Those skilled in the art will readily observe that numerousmodifications and alterations of the device and method may be made whileretaining the teachings of the invention. Accordingly, the abovedisclosure should be construed as limited only by the metes and boundsof the appended claims.

What is claimed is:
 1. A play yard comprising: two brackets; two railmembers pivotally connected to the brackets; two support frames, each ofthe support frames comprising two upper support members and a lowersupport member, the upper support members being pivotally connected tothe brackets, the lower support member being pivotally connected to theupper support members; a central member; a plurality of connectingmembers; a plurality of second hinges disposed on the lower supportmember and the central member, the connecting members being pivotallyconnected to the central member and the lower support member by thesecond hinges; a softgoods clothing covering the rail members, thesupport frames, the central member and the connecting members, whereinthe softgoods clothing has a tunnel, the second hinge on the lowersupport member is accommodated in the tunnel, and the tunnel allows thesecond hinge to slide from one end to another end as the central memberis lifted; and a latch mechanism configured to lock or unlock theconnecting members; wherein when the latch mechanism locks theconnecting members, the rail members, the upper support members, thelower support member and the connecting members are unfolded withrespect to each other; when the latch mechanism unlocks the connectingmembers, the rail members, the upper support members, the lower supportmember and the connecting members are able to be folded with respect toeach other.
 2. The play yard of claim 1, wherein the latch mechanism isdisposed on the central member; when the latch mechanism unlocks theconnecting members, the central member is able to be lifted; when thecentral member is lifted, the rail members, the upper support members,the lower support member and the connecting members rotate toward acenter of the play yard.
 3. The play yard of claim 1, wherein the railmember has a first engaging portion and the upper support member has asecond engaging portion; when the rail member and the upper supportmember are unfolded with respect to each other, the first engagingportion engages with the second engaging portion, such that the railmember is fixed in a horizontal position; when the central member islifted, the upper support member rotates toward a center of the playyard to disengage the second engaging portion from the first engagingportion, such that the rail member is able to rotate toward the centerof the play yard.
 4. The play yard of claim 1, wherein the upper supportmember has a first stop portion and a second stop portion; when theupper support members are unfolded, the first stop portion of one of theupper support members abuts against the second stop portion of anotherone of the upper support members.
 5. The play yard of claim 4, whereinthe bracket has a stop member; after the upper support member rotatestoward a center of the play yard, the first stop portion abuts againstthe stop member.
 6. The play yard of claim 1, wherein each of thesupport frames comprises two first hinges and the lower support memberis pivotally connected to the upper support members by the first hinges.7. The play yard of claim 1, wherein at least one of the second hingeshas a restraining groove, the central member has at least onerestraining portion located in the restraining groove, and a rotationangle of the connecting member is limited by the restraining portion andthe restraining groove.
 8. The play yard of claim 1, wherein the centralmember has a first slot, at least one of the second hinges has a secondslot aligned with the first slot, the latch mechanism comprises acasing, an actuating member, a resilient member and a latch member, thecasing is disposed on the central member, the actuating member ismovably connected to the casing, the latch member is pivotally connectedto the actuating member and the central member, the resilient member isdisposed between the actuating member and the central member; when theconnecting member is unfolded, a latch portion of the latch memberprotrudes out of the first slot and engages with the second slot, suchthat the latch member locks the connecting member; when the actuatingmember is depressed, the latch portion retracts from the first slot anddisengages from the second slot, such that the latch member unlocks theconnecting member.
 9. The play yard of claim 1, further comprising twofoot members and two floating members, the central member beingconnected to the foot members, the floating members being pivotallyconnected to the foot members, wherein when the latch mechanism locksthe connecting members, the floating members are unfolded and rest onthe lower support members; when the central member is lifted, thefloating members rotate toward a center of the play yard, such that thefloating members are folded.
 10. The play yard of claim 1, furthercomprising a mattress disposed in the play yard, the mattress comprisingtwo outer panels, a first central panel and a second central panel, theouter panels being pivotally connected to opposite sides of the firstcentral panel, an access hole being formed on the first central panel,the second central panel being pivotally connected to one of the outerpanels and covering the first central panel, wherein when the secondcentral panel is lifted, the access hole is exposed, such that the latchmechanism is able to be operated to unlock the connecting member and thecentral member is able to be lifted through the access hole.
 11. Theplay yard of claim 1, further comprising a bassinet assembly, thebassinet assembly comprising a fabric structure and two supportstructures, the fabric structure being hung on the rail members, thesupport structures being disposed in the fabric structure and configuredto support a mattress.
 12. The play yard of claim 11, wherein a throughhole is formed on a bottom of the fabric structure, such that the latchmechanism is able to be operated to unlock the connecting member and thecentral member is able to be lifted through the through hole.
 13. Theplay yard of claim 11, wherein each of the support structures comprisestwo rods and a pivot member, the rods are pivotally connected to thepivot member.
 14. The play yard of claim 1, further comprising a firstlinkage member and a second linkage member, the bracket having a slidinggroove, the first linkage member being pivotally connected to the railmember and the second linkage member, the second linkage member beingpivotally connected to the sliding groove, the second linkage memberrotating and sliding with respect to the sliding groove as the railmember is being folded or unfolded.
 15. The play yard of claim 1,further comprising at least one webbing strap and at least two pulleys,the pulleys being disposed on the lower support members, the webbingstrap being wound around the pulleys.
 16. A play yard comprising: twobrackets, each of the brackets having a sliding groove; two rail memberspivotally connected to the brackets; two support frames, each of thesupport frames comprising two upper support members and a lower supportmember, the upper support members being pivotally connected to thebrackets, the lower support member being pivotally connected to theupper support members; a central member; a plurality of connectingmembers pivotally connected to the central member and the lower supportmember; a latch mechanism configured to lock or unlock the connectingmembers; a first linkage member; and a second linkage member, the firstlinkage member being pivotally connected to the rail member and thesecond linkage member, the second linkage member being pivotallyconnected to the sliding groove, the second linkage member rotating andsliding with respect to the sliding groove as the rail member is beingfolded or unfolded; wherein when the latch mechanism locks theconnecting members, the rail members, the upper support members, thelower support member and the connecting members are unfolded withrespect to each other; when the latch mechanism unlocks the connectingmembers, the rail members, the upper support members, the lower supportmember and the connecting members are able to be folded with respect toeach other.
 17. The play yard of claim 16, wherein the latch mechanismis disposed on the central member; when the latch mechanism unlocks theconnecting members, the central member is able to be lifted; when thecentral member is lifted, the rail members, the upper support members,the lower support member and the connecting members rotate toward acenter of the play yard.
 18. The play yard of claim 16, wherein the railmember has a first engaging portion and the upper support member has asecond engaging portion; when the rail member and the upper supportmember are unfolded with respect to each other, the first engagingportion engages with the second engaging portion, such that the railmember is fixed in a horizontal position; when the central member islifted, the upper support member rotates toward a center of the playyard to disengage the second engaging portion from the first engagingportion, such that the rail member is able to rotate toward the centerof the play yard.
 19. The play yard of claim 16, wherein the uppersupport member has a first stop portion and a second stop portion; whenthe upper support members are unfolded, the first stop portion of one ofthe upper support members abuts against the second stop portion ofanother one of the upper support members.
 20. The play yard of claim 19,wherein the bracket has a stop member; after the upper support memberrotates toward a center of the play yard, the first stop portion abutsagainst the stop member.
 21. The play yard of claim 16, wherein each ofthe support frames comprises two first hinges and the lower supportmember is pivotally connected to the upper support members by the firsthinges.
 22. The play yard of claim 16, further comprising a plurality ofsecond hinges disposed on the lower support member and the centralmember, the connecting members being pivotally connected to the centralmember and the lower support member by the second hinges.
 23. The playyard of claim 22, further comprising a softgoods clothing covering therail members, the support frames, the central member and the connectingmembers, wherein the softgoods clothing has a tunnel, the second hingeon the lower support member is accommodated in the tunnel, and thetunnel allows the second hinge to slide from one end to another end asthe central member is lifted.
 24. The play yard of claim 22, wherein atleast one of the second hinges has a restraining groove, the centralmember has at least one restraining portion located in the restraininggroove, and a rotation angle of the connecting member is limited by therestraining portion and the restraining groove.
 25. The play yard ofclaim 22, wherein the central member has a first slot, at least one ofthe second hinges has a second slot aligned with the first slot, thelatch mechanism comprises a casing, an actuating member, a resilientmember and a latch member, the casing is disposed on the central member,the actuating member is movably connected to the casing, the latchmember is pivotally connected to the actuating member and the centralmember, the resilient member is disposed between the actuating memberand the central member; when the connecting member is unfolded, a latchportion of the latch member protrudes out of the first slot and engageswith the second slot, such that the latch member locks the connectingmember; when the actuating member is depressed, the latch portionretracts from the first slot and disengages from the second slot, suchthat the latch member unlocks the connecting member.
 26. The play yardof claim 16, further comprising two foot members and two floatingmembers, the central member being connected to the foot members, thefloating members being pivotally connected to the foot members, whereinwhen the latch mechanism locks the connecting members, the floatingmembers are unfolded and rest on the lower support members; when thecentral member is lifted, the floating members rotate toward a center ofthe play yard, such that the floating members are folded.
 27. The playyard of claim 16, further comprising a mattress disposed in the playyard, the mattress comprising two outer panels, a first central paneland a second central panel, the outer panels being pivotally connectedto opposite sides of the first central panel, an access hole beingformed on the first central panel, the second central panel beingpivotally connected to one of the outer panels and covering the firstcentral panel, wherein when the second central panel is lifted, theaccess hole is exposed, such that the latch mechanism is able to beoperated to unlock the connecting member and the central member is ableto be lifted through the access hole.
 28. The play yard of claim 16,further comprising a bassinet assembly, the bassinet assembly comprisinga fabric structure and two support structures, the fabric structurebeing hung on the rail members, the support structures being disposed inthe fabric structure and configured to support a mattress.
 29. The playyard of claim 28, wherein a through hole is formed on a bottom of thefabric structure, such that the latch mechanism is able to be operatedto unlock the connecting member and the central member is able to belifted through the through hole.
 30. The play yard of claim 28, whereineach of the support structures comprises two rods and a pivot member,the rods are pivotally connected to the pivot member.
 31. The play yardof claim 16, further comprising at least one webbing strap and at leasttwo pulleys, the pulleys being disposed on the lower support members,the webbing strap being wound around the pulleys.
 32. A play yardcomprising: two brackets; two rail members pivotally connected to thebrackets; two support frames, each of the support frames comprising twoupper support members and a lower support member, the upper supportmembers being pivotally connected to the brackets, the lower supportmember being pivotally connected to the upper support members; at leasttwo pulleys disposed on the lower support members; at least one webbingstrap wound around the pulleys; a central member; a plurality ofconnecting members pivotally connected to the central member and thelower support member; and a latch mechanism configured to lock or unlockthe connecting members; wherein when the latch mechanism locks theconnecting members, the rail members, the upper support members, thelower support member and the connecting members are unfolded withrespect to each other; when the latch mechanism unlocks the connectingmembers, the rail members, the upper support members, the lower supportmember and the connecting members are able to be folded with respect toeach other.
 33. The play yard of claim 32, wherein the latch mechanismis disposed on the central member; when the latch mechanism unlocks theconnecting members, the central member is able to be lifted; when thecentral member is lifted, the rail members, the upper support members,the lower support member and the connecting members rotate toward acenter of the play yard.
 34. The play yard of claim 32, wherein the railmember has a first engaging portion and the upper support member has asecond engaging portion; when the rail member and the upper supportmember are unfolded with respect to each other, the first engagingportion engages with the second engaging portion, such that the railmember is fixed in a horizontal position; when the central member islifted, the upper support member rotates toward a center of the playyard to disengage the second engaging portion from the first engagingportion, such that the rail member is able to rotate toward the centerof the play yard.
 35. The play yard of claim 32, wherein the uppersupport member has a first stop portion and a second stop portion; whenthe upper support members are unfolded, the first stop portion of one ofthe upper support members abuts against the second stop portion ofanother one of the upper support members.
 36. The play yard of claim 35,wherein the bracket has a stop member; after the upper support memberrotates toward a center of the play yard, the first stop portion abutsagainst the stop member.
 37. The play yard of claim 32, wherein each ofthe support frames comprises two first hinges and the lower supportmember is pivotally connected to the upper support members by the firsthinges.
 38. The play yard of claim 32, further comprising a plurality ofsecond hinges disposed on the lower support member and the centralmember, the connecting members being pivotally connected to the centralmember and the lower support member by the second hinges.
 39. The playyard of claim 38, further comprising a softgoods clothing covering therail members, the support frames, the central member and the connectingmembers, wherein the softgoods clothing has a tunnel, the second hingeon the lower support member is accommodated in the tunnel, and thetunnel allows the second hinge to slide from one end to another end asthe central member is lifted.
 40. The play yard of claim 38, wherein atleast one of the second hinges has a restraining groove, the centralmember has at least one restraining portion located in the restraininggroove, and a rotation angle of the connecting member is limited by therestraining portion and the restraining groove.
 41. The play yard ofclaim 38, wherein the central member has a first slot, at least one ofthe second hinges has a second slot aligned with the first slot, thelatch mechanism comprises a casing, an actuating member, a resilientmember and a latch member, the casing is disposed on the central member,the actuating member is movably connected to the casing, the latchmember is pivotally connected to the actuating member and the centralmember, the resilient member is disposed between the actuating memberand the central member; when the connecting member is unfolded, a latchportion of the latch member protrudes out of the first slot and engageswith the second slot, such that the latch member locks the connectingmember; when the actuating member is depressed, the latch portionretracts from the first slot and disengages from the second slot, suchthat the latch member unlocks the connecting member.
 42. The play yardof claim 32, further comprising two foot members and two floatingmembers, the central member being connected to the foot members, thefloating members being pivotally connected to the foot members, whereinwhen the latch mechanism locks the connecting members, the floatingmembers are unfolded and rest on the lower support members; when thecentral member is lifted, the floating members rotate toward a center ofthe play yard, such that the floating members are folded.
 43. The playyard of claim 32, further comprising a mattress disposed in the playyard, the mattress comprising two outer panels, a first central paneland a second central panel, the outer panels being pivotally connectedto opposite sides of the first central panel, an access hole beingformed on the first central panel, the second central panel beingpivotally connected to one of the outer panels and covering the firstcentral panel, wherein when the second central panel is lifted, theaccess hole is exposed, such that the latch mechanism is able to beoperated to unlock the connecting member and the central member is ableto be lifted through the access hole.
 44. The play yard of claim 32,further comprising a bassinet assembly, the bassinet assembly comprisinga fabric structure and two support structures, the fabric structurebeing hung on the rail members, the support structures being disposed inthe fabric structure and configured to support a mattress.
 45. The playyard of claim 44, wherein a through hole is formed on a bottom of thefabric structure, such that the latch mechanism is able to be operatedto unlock the connecting member and the central member is able to belifted through the through hole.
 46. The play yard of claim 44, whereineach of the support structures comprises two rods and a pivot member,the rods are pivotally connected to the pivot member.
 47. The play yardof claim 32, further comprising a first linkage member and a secondlinkage member, the bracket having a sliding groove, the first linkagemember being pivotally connected to the rail member and the secondlinkage member, the second linkage member being pivotally connected tothe sliding groove, the second linkage member rotating and sliding withrespect to the sliding groove as the rail member is being folded orunfolded.